Simulation and Experiments on Sealing and Extrusion Failure on Application of Deep-Sea Adsorption by Differential Pressure

Author:

Sun Shirui1ORCID,Zou Yutang12,Zhang Zengmeng3,Yang Yuhang4,Che Jinkai1,Gong Yongjun52

Affiliation:

1. College of Naval Architecture and Ocean Engineering, Dalian Maritime University , Dalian, Liaoning 116026, China

2. Dalian Maritime University

3. Liaoning Provincial Key Laboratory of Rescue and Salvage Engineering, College of Naval Architecture and Ocean Engineering, Dalian Maritime University , Dalian, Liaoning 116026, China

4. Nanhai Rescue Bureau of the Ministry of Transport of PRC , Guangzhou, Guangdong 510235, China

5. International Joint Research Center for Subsea Engineering Technology and Equipment, Liaoning Provincial Key Laboratory of Rescue and Salvage Engineering, Dalian Maritime University , Dalian, Liaoning 116026, China

Abstract

Abstract Negative pressure adsorption can make use of deep-sea environmental pressure to provide a great adsorption force and it is a suitable fixed method for deep-sea applications. However, the deep-sea environment puts forward higher requirements for the sealing performance of negative pressure suction cups, so a more adaptable suction cup sealing device is needed. In this paper, a deep-sea adsorption device with rigid suction cups is designed, and the suction cup is sealed by O-ring. The influence of both section diameter and inner diameter of the O-ring on its preload, suction force, and extrusion failure is tested and analyzed. Moreover, the fitting formula is given to guide the selection of the section diameter and inner diameter of the O-ring. Furthermore, according to the summary of the experimental phenomenon, dual-accumulators configuration with stage pressures method is created, and the theoretical basis that the suction cup can achieve a larger suction force under the condition of a small preload force is given, which can provide a reference for the design of deep-sea adsorption devices and sealing structure.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Liaoning Province

Publisher

ASME International

Reference27 articles.

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2. Study on the Optimal Design for Cavitation Reduction in the Vortex Suction Cup for Underwater Climbing Robot;J. Mar. Sci. Eng.,2022

3. Corrosion Mechanism of Hydrogenated Nitrile Butadiene Rubber O-Ring Under Simulated Wellbore Conditions;Corros. Sci.,2016

4. Design of O-Ring Static Seal Structure Under Deep-Sea Environment;Lubr. Eng.,2014

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